公开(公告)号：US20170089824A1

公开(公告)日：2017-03-30

申请号：US15272697

申请日：2016-09-22

Applicant: Chongqing University ,  Chongqing University of Science and Technology

Inventor： Zichen Xu ,  Guixue Wang ,  Wenfeng Xu ,  Xiaoling Liao

IPC: G01N15/14 ,  G02B21/36 ,  G02B21/34 ,  G01N33/49

CPC classification number: G01N15/1436 ,  C12M41/14 ,  C12M41/46 ,  G01N15/1404 ,  G01N15/147 ,  G01N33/4915 ,  G01N2015/0065 ,  G01N2015/1006 ,  G01N2015/144 ,  G02B21/34 ,  G02B21/362

Abstract: A method of using a device for conducting a vascular hemodynamic bionic cell experiment is provided, the method comprises: firstly, experiment preparation; and secondly, experiment operation, namely, switching on a peristaltic pump, pumping a circulation liquid from a collection bottle into an independently corresponding shunting chamber of a corresponding shunting bottle through a collection bottle sampling tube of an independent chamber of a collection bottle, after shunting by the shunting chamber of the shunting bottle, the circulation liquid flowing out of a branch shunting tube flows to a corresponding flow chamber on the 1-3 flow chamber platforms placed side by side, and then converging the circulation liquid to a corresponding independent chamber of the collection bottle through respective sampling tubes of the flow chamber platforms. The method provided by the present disclosure has the technical characteristics of strong practicability and low manufacturing cost, and can perform a vascular hemodynamic bionic cell experiment under multiple conditions with multiple parameters when used in combination with different models of shunting bottles and flow chamber platforms.

公开(公告)号：US09784662B2

公开(公告)日：2017-10-10

申请号：US15272697

申请日：2016-09-22

Applicant: Chongqing University ,  Chongqing University of Science and Technology

Inventor： Zichen Xu ,  Guixue Wang ,  Wenfeng Xu ,  Xiaoling Liao

IPC: C12M3/00 ,  C12M1/34 ,  G01N15/14 ,  G01N33/49 ,  G02B21/36 ,  G02B21/34 ,  G01N15/00 ,  G01N15/10 ,  C12M1/00

CPC classification number: G01N15/1436 ,  C12M41/14 ,  C12M41/46 ,  G01N15/1404 ,  G01N15/147 ,  G01N33/4915 ,  G01N2015/0065 ,  G01N2015/1006 ,  G01N2015/144 ,  G02B21/34 ,  G02B21/362

Abstract: A method of using a device for conducting a vascular hemodynamic bionic cell experiment is provided, the method comprises: firstly, experiment preparation; and secondly, experiment operation, namely, switching on a peristaltic pump, pumping a circulation liquid from a collection bottle into an independently corresponding shunting chamber of a corresponding shunting bottle through a collection bottle sampling tube of an independent chamber of a collection bottle, after shunting by the shunting chamber of the shunting bottle, the circulation liquid flowing out of a branch shunting tube flows to a corresponding flow chamber on the 1-3 flow chamber platforms placed side by side, and then converging the circulation liquid to a corresponding independent chamber of the collection bottle through respective sampling tubes of the flow chamber platforms. The method provided by the present disclosure has the technical characteristics of strong practicability and low manufacturing cost, and can perform a vascular hemodynamic bionic cell experiment under multiple conditions with multiple parameters when used in combination with different models of shunting bottles and flow chamber platforms.

公开(公告)号：US12228189B2

公开(公告)日：2025-02-18

申请号：US17824053

申请日：2022-05-25

Applicant: CHONGQING UNIVERSITY

Inventor： Xiaomin Dong ,  Xianyu Song ,  Jianqiang Yu

IPC: F16F9/53 ,  F16F9/18 ,  F16F9/58

Abstract: A self-sensing and separated dual-cylinder magnetorheological damper includes a first piston cylinder and a second piston cylinder which are in angular communication with each other. The first piston cylinder includes a piston inner cylinder and a piston outer cylinder which together with the second piston cylinder form a magnetorheological fluid circulation channel. The piston inner cylinder is provided with a piston rod assembly reciprocating in an axial direction of the piston inner cylinder, and when the piston rod assembly is compressed and restored, the magnetorheological liquid correspondingly forms a first circulation loop and a second circulation loop respectively. The second piston cylinder is provided therein with a magnetorheological liquid adjustment mechanism for forming the first circulation loop and the second circulation loop. Independent control of damping force values in compression and restoration working conditions can be achieved by means of different circulation channels of the magnetorheological liquid.

公开(公告)号：US20250053739A1

公开(公告)日：2025-02-13

申请号：US18272584

申请日：2022-10-24

Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS

Inventor： Haiyan Yu ,  Xiaolong Zuo ,  Yi Yan ,  Guokang Fan

IPC: G06F40/279 ,  G16H50/20 ,  G16H50/70

Abstract: The present invention includes techniques for data processing and particularly relates to a method and system for predicting human fall risk based on electronic nursing text (ENT) data. The method comprises the following steps: obtaining an ENT data set, pre-processing data in the ENT data set, and constructing a Morse Fall Scale (MFS) dictionary with the pre-processed data; extracting features from the ENT data of patients to be predicted with a natural language processing technology; analyzing the extracted text features by the MFS dictionary to obtain a data set of risk factors; training a decision tree algorithm by using the data set of risk factors to obtain a prediction result of the patient's fall risk; clustering and precisely nursing the patients according to the prediction result. The invention constructs the MFS dictionary through the electronic health records to obtain fall risk factors of the patients, and iteratively predicts their fall risks according to the risk factors, thereby improving the prediction efficiency.

公开(公告)号：US12203526B2

公开(公告)日：2025-01-21

申请号：US17655294

申请日：2022-03-17

Applicant: Chongqing University

Inventor： Jun Luo ,  Xu Chen ,  Huayan Pu ,  Jinglei Zhao ,  Yan Jing

IPC: F16F6/00 ,  F16F15/18

Abstract: A negative stiffness generating mechanism and a quasi-zero stiffness vibration isolator are provided. A housing is mounted on a base, and the axial relative positions of the housing and the base can be adjusted; a negative stiffness unit comprises inner-ring magnets, outer-ring magnets and a supporting shaft, the supporting shaft axially slides on the base and passes through the housing, the inner-ring magnets fixedly sleeve the supporting shaft, and the outer-ring magnets sleeve outside the inner-ring magnets and are divided into upper and lower groups of outer-ring magnets; the upper and lower groups of outer-ring magnets can synchronously move through a negative stiffness adjusting device; and the axial relative positions of the middle planes of the outer-ring and inner-ring magnets can be adjusted by adjusting the axial relative positions of the housing and the base. The isolator comprises a negative stiffness generating mechanism and a positive stiffness unit.

公开(公告)号：US20240404077A1

公开(公告)日：2024-12-05

申请号：US18677886

申请日：2024-05-30

Applicant: CHONGQING UNIVERSITY OF TECHNOLOGY

Inventor： Xin FENG ,  Ling LU ,  Yumei SHAN ,  Di MING ,  Fang YUE ,  Wu YANG ,  Jianwu LONG

IPC: G06T7/20

Abstract: The present invention relates to unsupervised tracking technology, specifically an unsupervised tracking model training strategy based on contrastive loss. The method comprises: S1: forming a constrained SSCI module using the relation between objects within a video frame and between adjacent video frames; S2: setting features of different objects in each frame as negative samples, and similar adjacent frame objects as positive sample pairs, constructing contrastive loss; S3: constraining embedded features (E_t) by variable loss based on self-supervised contrastive loss. This invention provides a contrastive loss-based training strategy for unsupervised multi-object tracking, leveraging the prior that objects in a frame must be different to enhance object similarity, and using self-supervised learning to match similar objects in short-interval frames as positive samples to boost cross-frame feature expression. Finally, it further improves cross-frame feature expression by ensuring consistent forward and reverse matching.

公开(公告)号：US12058846B2

公开(公告)日：2024-08-06

申请号：US17652276

申请日：2022-02-23

Applicant: Chongqing University

Inventor： Yuxin Zhang ,  Kailin Li ,  Ping′an Yang ,  Xiaoying Liu ,  Shihai Ren ,  Shuang Yi ,  Jinsong Rao ,  Nan Li ,  Lichao Dong ,  Dalong Cong ,  Jingying Bai ,  Wenxiang Shu

IPC: C01G23/00 ,  C09C1/36 ,  C09C3/06 ,  H05K9/00

CPC classification number: H05K9/0083 ,  C01G23/007 ,  C09C1/36 ,  C09C3/063 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/24 ,  C01P2004/61

Abstract: A titanium sulfide (TiS) nanomaterial and a composite material thereof for wave absorption are disclosed. The TiS nanomaterial is in a form of dispersed micro-particles which are bulks formed by stacking two-dimensional nano-sheets. The TiS nanomaterial is a bulk formed by stacking two-dimensional nano-sheets, thereby having a laminated structure that improves the wave absorption effect. In addition, experimental results demonstrate that the TiS nanomaterial with a dose of 40 wt % has the most excellent wave absorption performance, with a minimum reflection loss up to −47.4 dB, an effective absorption bandwidth of 5.9 GHz and an absorption peak frequency of 6.8 GHz, which are superior to those of existing two-dimensional bulk materials. One of reasons for the excellent wave absorption performance of the TiS nanomaterial may be because the laminated micro-morphology of TiS results in the electromagnetic wave refraction loss.

公开(公告)号：US12052984B2

公开(公告)日：2024-08-06

申请号：US17094954

申请日：2020-11-11

Applicant: CHONGQING UNIVERSITY OF ARTS AND SCIENCES

Inventor： Lijun Zhao ,  Zihan Wang ,  Yang Yu ,  Qiang Li ,  Chenglin Wang ,  Cheng Lv ,  Pengcheng Lin ,  Chunjiang Li ,  Yinan Tian ,  Naifu Zhang ,  Qi Liao ,  Lishi Ji ,  Boxin Li

IPC: A01M7/00 ,  A01B69/00

CPC classification number: A01M7/0089 ,  A01B69/001 ,  A01M7/0014 ,  A01M7/0042 ,  A01M7/0075 ,  A01M7/0085

Abstract: An intelligent pesticide spraying robot self-adaptive to terrain of mountain land is provided. Walking mechanisms are respectively connected to both side ends of a chassis. A pesticide spraying mechanism includes rotary drive mechanisms respectively connected to both sides of the rear end of the chassis, telescopic spray boom mechanisms correspondingly connected to the rotary drive mechanisms, rotary nozzle mechanisms correspondingly connected to the telescopic spray boom mechanisms, a liquid pesticide storage box fixed to the top of the chassis, a first water pump fixed in the liquid pesticide storage box, and first water pipes in communication with the first water pump and the rotary nozzle mechanisms. A control chip of a control identification mechanism is communicatively connected to the walking mechanisms, the rotary drive mechanisms, the telescopic spray boom mechanisms, the rotary nozzle mechanisms, the first water pump, a front-end camera, side-end cameras and ultrasonic sensors respectively.

公开(公告)号：US20240200165A1

公开(公告)日：2024-06-20

申请号：US18316192

申请日：2023-05-11

Applicant: CHONGQING SHANGJIA ELECTRONIC CO., LTD. ,  CHONGQING UNIVERSITY

Inventor： LIANG FU ,  SHUCHUN LI ,  FUSHENG PAN ,  HUALIN XIE ,  XINREN LIAO ,  JUNCAI MA ,  PING LI ,  ZHAN XU

IPC: C22B59/00 ,  C22B1/24 ,  C22B7/00

CPC classification number: C22B59/00 ,  C22B1/24 ,  C22B7/002 ,  C22B7/004

Abstract: Provided are a method and molten salt system for recovering rare earth elements from NdFeB waste and use of ferric oxide as a raw material of a manganese-zinc ferrite. The molten salt system comprising the following components in percentage by weight: 40% of K3AlF6 or Na3AlF6, 40% of KBe2F5, and 20% of KAlF4. By adopting the three-component molten salt system of the present invention, recovery rates of rare earth elements extracted from NdFeB waste all can reach 98% or above. By adopting the three-component molten salt system, extraction temperature is 100-400° C. lower than that of all current similar halogenation methods, and extraction time is fold shorted to 1-3 h. The reduction of the extraction temperature and the shortening of the melting time greatly reduce the energy consumption of extracting rare earth elements from NdFeB waste, and the economic benefits are remarkable.

公开(公告)号：US12013237B2

公开(公告)日：2024-06-18

申请号：US17121648

申请日：2020-12-14

Applicant: Chongqing University ,  Shanghai University

Inventor： Huayan Pu ,  Jinglei Zhao ,  Jun Luo ,  Jiyun Zhao ,  Qinghua Kong ,  Jiheng Ding ,  Min Wang ,  Yi Sun ,  Zong Li ,  Long Bai ,  Yan Peng ,  Shaorong Xie

IPC: G01B7/008 ,  G01B7/06 ,  G01B7/14

CPC classification number: G01B7/008 ,  G01B7/102 ,  G01B7/14

Abstract: The present invention discloses a quasi-zero-stiffness (QZS) based six-degree-of-freedom (6-DOF) absolute displacement and attitude measurement device. A lower end coil and an upper end coil are respectively charged with currents in the opposite directions; The electromagnetic field and the magnetic fields of an upper magnet and a lower magnet per se are mutually acted to produce an electromagnetic stiffness opposite to the stiffness of a spring. The stiffness of the whole leg is close to zero stiffness. When the to-be-measured platform generates space motion, the reference platform is in the stationary state. At this point, the deformation amounts of the six legs can be measured by laser displacement sensors. The six deformation amounts are respectively inputted into the displacement and attitude resolver, and by forward kinematic solution of the 6-DOF device, the displacement and the attitude of the to-be-measured platform can be obtained.